CN1012261B

CN1012261B - Locating device of casting pattern

Info

Publication number: CN1012261B
Application number: CN86101820A
Authority: CN
Inventors: 唐纳德·李·索瑟姆
Original assignee: Combustion Engineering Inc
Current assignee: Combustion Engineering Inc
Priority date: 1985-03-26
Filing date: 1986-03-19
Publication date: 1991-04-03
Also published as: CN86101820A; ES553400A0; EP0195937B1; DK137486D0; EP0195937A3; JPS6254576B2; JPS61226142A; DE3666160D1; ES8706056A1; IN163477B; US4628986A; CA1227615A; KR860007047A; AU573970B2; DK137486A; KR900002033B1; MX164943B; SU1454238A3; EP0195937A2; AU5525086A

Abstract

A register system is provided for making molds for metal casting which reduces flaws attributable to parting line shift. This is accomplished by urging the cope mold flask against two fixed stops on the long axis, and one fixed stop on the short axis of the flask. This same register principle is applied in the drag mold making station 18, where the drag flask is urged against two fixed stops on the long axis, and one fixed stop on the short axis of the flask. At the closer station, where the mold halves are assembled, they are again urged against two fixed stops on the long axis, and one fixed stop on the short axis of the flasks. Thus the flasks are properly aligned to the patterns at the mold making stations, and again properly aligned to each other at the closer station, so as to eliminate parting line shift problems of the mold halves.

Description

Locating device of casting pattern

In general mold is produced, all be to lean on pin and guide pin bushing to aim between sandbox and wooden model and sandbox and the sandbox.More precisely, as a rule, be to be meshed with guide pin bushing on being contained in drag box when manufacturing mold with the pin of adorning on the wooden model.In last drag box matched moulds, these guide pin bushings are used for again being meshed with the pin adorned on the cope, and two sandboxes are exactly here to assemble up and down.Reach the requirement of aiming between wooden model and sandbox and the sandbox with the top way of saying.

One of problem that often runs in general mold production system is the casting crack that causes owing to the displacement of sand mo(u)ld interface.A main cause that causes this casting flaw be with pin and guide pin bushing between the relevant general considerations of needed fit tolerance, the wearing and tearing of the component that these are strict have increased the numerical value of above-mentioned fit tolerance again.Generally for following sand mo(u)ld, need tens/1000ths inches so big fit tolerances between the pin on the wooden model and the guide pin bushing that matches, to prevent when sandbox is put on the wooden model or when sandbox was mentioned, pin and guide pin bushing were bitten.Also need identical fit tolerance when manufacturing cope, simultaneously, the cooperation between the last drag box also can run into same fit tolerance problem.

Except original fit tolerance, often can see also that pin and/or guide pin bushing produce wearing and tearing, this wearing and tearing usually can make fit tolerance increase by tens/1000ths inches again.So, can see too clearly, after pin and guide pin bushing wearing and tearing, a drag box just may produce a displacement with respect to its wooden model, and this displacement may be left the real in theory position that requires and reach 15/1000ths inches so big.Equally, a cope also may produce suitable therewith displacement, and just direction is opposite.After up and down two sandboxes lump together at last, only because these parameters just may produce greatly 45/1000ths inches dislocation between cope and drag box interface.

The purpose of this invention is to provide a kind of mo(u)lding equipment, its positioner can eliminate because pin and the fit tolerance of guide pin bushing and the caused dislocation of wearing and tearing.

Can eliminate because pin and the fit tolerance of guide pin bushing and the caused dislocation of wearing and tearing with a kind of positioner according to the present invention.This localization method is exactly that the long limit of rectangle sandbox is pushed to two fixing locating surfaces (or a long locating surface) and pushed its minor face to a fixing locating surface.On the molding position of cope and drag box, all adopt above-mentioned this localization method, will be up and down also be such location on the matched moulds position that lumps together of two sandboxes, simultaneously, for all positioning actions, all utilize identical sandbox face.

Accompanying drawing below makes a brief explanation.

Shown in Figure 1 is that the mold that is equiped with positioner of the present invention is manufactured the production line schematic diagram;

Shown in Figure 2 is the side view that cope is manufactured part;

Fig. 3 is similar to Fig. 2, is the position that cope is in back-up sand;

Fig. 4 is similar to view shown in Figure 3, and the expression cope is just on the jolt ramming position;

Shown in Figure 5 is the plan view of the 5-5 hatching from Fig. 3, shows positioner of the present invention;

Figure 6 shows that drag box manufacture the part side view;

Fig. 7 is similar to Fig. 6, is the position that drag box is in back-up sand;

Fig. 8 is similar to view shown in Figure 7, and the expression drag box is just on the jolt ramming position;

Shown in Figure 9 is the plane of the 9-9 hatching from Fig. 7, shows positioner of the present invention;

Figure 10 a, 10b and 10c represent the turning device of drag box;

Shown in Figure 11 is with two matched moulds positions that sandbox lumps together up and down;

Shown in Figure 12 is plane behind the sandbox matched moulds, the positioner of the present invention that expression is adopted;

Figure 13 is the profile of the 13-13 line intercepting from Figure 12.

Referring now to Fig. 1,, the whole mold of 10 representatives is manufactured production line.Empty sandbox 11 returns from casting bay, enters cope and manufactures on the supply line 12, here cope is placed on the molding platform, and back-up sand and vibration compacting in the sandbox, these operations are all manufactured part 14 at cope and are carried out there.Equally, empty sandbox 15 returns from casting bay, enters drag box and manufactures on the supply line 16, here drag box is placed on the molding platform, and be back-up sand and vibration compacting toward sandbox, these operations are to manufacture part 18 theres at drag box to finish.Then, drag box turns over it by turning device 20, thereby one of wooden model is faced up.

After turning, arrived following sand mo(u)ld 21 24 theres, position of matched moulds along supply line 22.In this section transportation, core is placed to down in the sand mo(u)ld usually, at 24 places, matched moulds position, to go up sand mo(u)ld 23 and be placed into down on the sand mo(u)ld, and position, form a complete mold, and an interface arranged in the horizontal direction, this moment, mold was ready to, and can be sent to casting bay along supply line, cast there.Each

bar supply line

12,16 and 22 action are all harmonious, therefore can move together.Such as, with per 30 seconds be a conversion time, sandbox will move one step forward on supply line so.Because the direction of the sand mo(u)ld that is transported on the supply line 22 is corresponding with its long limit, and supply line 12 is corresponding with its minor face with the direction of 16 sand mo(u)lds of failing far away, so supply line 22 will mobile larger distance in a conversion time.The another one way is that supply line 22 is moved continuously.In this case, generally on 21 and 24 these two positions, prepare, make it to keep synchronously with the supply line of operation continuously.

Referring now to Fig. 2-Fig. 5,, can see and go up the detailed description that sand mo(u)ld is manufactured part 14.Can see that from Fig. 2 with any suitable mode, manufacture part 14 and come such as with manipulator 30 cope 11 being transported to sand mo(u)ld, manipulator 30 can be supported by the aerial construction that moves here.Manipulator 30 is transported to sandbox 11 that the last empty position of molding platform 32 is just left alone without help later on to get off.The piston-cylinder apparatus that is contained on the column 36 rises molding platform 32, and contacts with the flange 38 of sandbox bottom.At this moment, just fix the position of sandbox exactly, also will carry out more detailed explanation below this point for wooden model according to positioner of the present invention.Come now referring to Fig. 3, when sandbox 11 after reserving the position on the molding platform 32, manipulator 30 promptly is moved a distance, makes it to break away from sandbox and reserve the position of sandbox with respect to wooden model exactly by positioner.At this moment, from filling up sandbox for the sand that flows out the box 34 of sand.Then, just remove, and compaction apparatus 42 moves on to the top (Fig. 4) of sandbox from this position for the box 34 of sand.Can be contained in the same built on stilts mechanism (not showing on the figure) for sand box 34 and compaction apparatus 42, they can alternately will move forward and backward on this position from opposite direction for sand box and compaction apparatus with any proper device.

Below referring to Fig. 4, compaction apparatus 42 moves down by means of the transmission of the piston cylinder that is connected with column 44, contact with the upper surface of sand, thereby there is a bigger masterpiece to be used on the surface of sand, meanwhile, the platform 46 of support sandbox vibrates by means of any proper device or pats, so just sand can be tamped, employed device can be air motor or hydraulic motor, the sand the inside includes enough binding materials, such as clay and so on, thereby can in sandbox, form a kind of mold of semihard.Made ready-made still half in sandbox mold and manufactured position 14(Fig. 1 from mold) remove, before this, to lift compaction apparatus 42 earlier.All above-mentioned these actions all will be cycle conversion time, such as finishes with interior for 30 seconds.

Coming that referring now to Fig. 5 last sand mo(u)ld is manufactured positioner used on the position 14 is illustrated.When the sandbox 11 of sky has been placed on the molding platform 32 and after manipulator 30 has been separated from, all be used for determining exactly the position of sandbox along two retainers 50,52 on the limit of sandbox and the 3rd retainer 54.These retainers generally all are installed on the model or on the model supporting base.There is pair of push rods device 56 and 58 to be used for sandbox is pushed to retainer.The piston cylinder actuator 60 of push rod device 56 begins action, promote sandbox up to sandbox and retainer 50 with till 52 contact.Then, actuator 62 begins action, just promotes sandbox 11 and makes it contact with retainer 54 so push rod adorns 58, and like this, sandbox 11 just exactly with respect to model orientation, just can be inserted sand in the sandbox, thereby finish manufacturing of sand mo(u)ld at this moment.Can load onto the standard of making by the wear-resisting steel plate of sclerosis 64,66 and 68 in the limit of sandbox 11 one, with retainer 50,52 and 54 cooperatings, in order to avoid these parts are worn and torn soon.

Referring now to Fig. 6～Fig. 9 comparatively detailed explanation is carried out in the position of manufacturing of following sand mo(u)ld.To manufacture the operation of carrying out the position identical with last sand mo(u)ld, and any suitable method of drag box 15 usefulness is transported to sand mo(u)ld and manufactured on the position 18, and such as can using manipulator 70 to come handling, this manipulator can support with built on stilts mechanism movably.Manipulator moves on to sandbox 15 that molding platform 72 top positions are just left alone without help later on gets off.A piston-cylinder apparatus on column 74 lifts molding platform 72, contacts with the following flange 76 of sandbox.At this moment, exactly sandbox is fixed with respect to the position of model with positioner of the present invention, this point will explanation in further detail in Fig. 9.Referring to Fig. 7, after being placed on the molding platform 72, sandbox 15 just accurately determines the position of sandbox below with respect to wooden model with positioner.At this moment, by filling sand to sandbox for sand box 80.Fill up after the sandbox, move from this position backward, and compaction apparatus 82(Fig. 8 for sand box 80) move on to the top of sandbox position.Compaction apparatus 82 moves down, and contacts with the upper surface of sand and vibrate sandbox 15 by platform 84 to make the sand compacting.Manufacture half mold that finishes and be moved to turning device 20 theres (Fig. 1), compaction apparatus has lifted before this.

Illustrate at following sand mo(u)ld below with reference to Fig. 9 and to manufacture the positioning action method of position 18.When the sandbox 15 of sky has been placed on the molding platform 72 and after manipulator 70 has been separated from, uses along two

retainers

86,88 and the 3rd retainer 90 on the limit of sandbox.As shown in Figure 5, these retainers generally all are installed on the model or on the model supporting base.There is pair of push rods device 92 and 94 to be used for sandbox is shifted onto on its due position.The piston cylinder actuator 96 of push rod device 92 moves immediately, promotes sandbox till sandbox and

retainer

86,88 contacts.At this moment, actuator 98 begins action, and push rod device 94 just promotes sandbox 15 to be made it to contact with retainer 90.Like this, just exactly with respect to model orientation, just can insert sand in the sandbox this moment, thereby finish down manufacturing of sand mo(u)ld for sandbox 15.Can load onto by the standard 100,102 made of wear-resisting steel plate of sclerosis and 104 and

retainer

86,88 and 90 cooperatings, in order to avoid these parts are worn and torn soon in the limit of sandbox 15 one.Retainer also can be made with hardened steel.As can be seen, used just the same of positioner that following sand mo(u)ld is used and last sand mo(u)ld just has a main exception.Because following sand mo(u)ld is at turning device 20(Fig. 1) there will turn over, the therefore retainer 86,88th in Fig. 9, part below, and the part in the above of the retainer 50,52 in Fig. 5.Instantly sand mo(u)ld enters matched moulds position 24(Fig. 1) time, the anchor point of cope and drag box will coincide together at interfacial flange there.

Referring now to 10a, 10b and 10c explain the situation of turning device.A pair of clamping plate 110,112 are arranged, and they can rotate around own pivot 114,116 respectively.Simultaneously, these two revoliving arms or clamping plate can rotate around pivot 118 again together.When a sandbox 21 moved on the turning device 20, clamping plate 110 were on the horizontal level shown in Figure 10 a and clamping plate 112 are the positions of lifting at it, as shown in phantom in FIG..After sandbox had been put on the lower plate 110, train wheel bridge 112 just rotated around pivot 116 up time directions, and sandbox is clipped between two clamping plate tightly.Subsequently, clamping plate and sandbox entirely counterclockwise rotate about 180 ° (Figure 10 b) around pivot 118 together, and sandbox is placed into supply line 22(Fig. 1) end of center line, then, clamping plate 110 are around upwards upset (Figure 10 c) of pivot 114.At this moment, a push rod device 120(Fig. 1) begin action, sandbox is shifted onto on the supply line 22.Right latter two clamping plate all return on its home position, and upset is next manufactures the sandbox that position 18 is shipped from following sand mo(u)ld so that prepare.

Referring now to the matched moulds position 24(Fig. 1 shown in Figure 11), last sand mo(u)ld and following sand mo(u)ld are exactly here to assemble, and lump together.Following sand mo(u)ld 21 is delivered on the matched moulds position by supply line 22.Simultaneously, last sand mo(u)ld 23 arrives the top of sand mo(u)ld down by means of the manipulator handling, and manipulator can adopt any mode commonly used to be contained on the built on stilts supporting mechanism.Be placed in according to positioner 138 of the present invention and 142 on the major axis center line of sandbox.In Figure 12 and 13, can see having pair of push rods device 130 arranging up and down, can individually two sandboxes be pushed to a pair of retainer of arranging along the long limit of sandbox 134 and 136.In addition, also have a pair of

push rod device

138 and 140 of arranging up and down, can push two sandboxes to a retainer 142 individually.As manufacturing the situation of position at last sand mo(u)ld and following sand mo(u)ld, the wear-resisting steel plate 50,52 and 54 of sclerosis is installed on cope, corresponding steel plate also is installed on drag box, thereby makes these locating surfaces have anti-wear performance preferably, service time is longer.In production operation, push drag box to shared retainer 134,136 and 142 with being positioned at following push rod device 140 and 130.After cope 23 falls, just push cope to common retainer 134,136 and 142 with being positioned at top

push rod device

130 and 138.

Since both direction on sand mo(u)ld and following sand mo(u)ld adopted independent push rod device, the flange that therefore just can adapt to cope is than the flange of drag box some or smaller situation greatly.The sandbox surface that the position that positioner or retainer are installed can make here to be contacted is in full accord with the sandbox surface of manufacturing on the position at last sand mo(u)ld and following sand mo(u)ld to be contacted.So, each sandbox all is to locate according to same datum level, thereby can make its position each other very accurate.

Claims

1, a kind of mo(u)lding equipment (10) comprises following combination:

Be used for making first device for producing molds (14) of sand mo(u)ld (23), it has a metal quadrangle cope (11), first model (32), to the device (34,42) of cope (11) back-up sand and compacting sand;

Be used for making down second device for producing molds (16) of sand mo(u)ld (21), it has a metal quadrangle drag box (15), second model (72), to the device (80,82) of drag box (15) back-up sand and compacting sand;

Matched moulds position (24);

A device (22) that drag box (15) is moved to that matched moulds position (24) is gone up and cavity one side of drag box is placed up;

One moves to matched moulds position (24) with cope (11) and cope is placed on drag box (15) top position so that the device (12) that two sandbox cavitys are combined together;

It is characterized in that also comprising:

A. drive first actuating device (60) of push rod device (56), by promoting cope (11) first standard (64,66) on its one side is come on first retainer (50,52), so that relative first wooden model of cope (11) is accurately located;

B. drive second actuating device (58) of push rod device (58), by promoting cope (11) second standard (68) on its adjacent one side is come on second retainer (54), so that make the relative first wooden model accurate in locating of cope (11);

C. drive the 3rd actuating device (96) of push rod device (92), by promoting drag box (15) first standard (100,102) on its one side is come on the 3rd retainer (86,88), so that relative second wooden model of drag box (15) is accurately located;

D. drive the 4th actuating device (98) of push rod device (94), by promoting drag box (15) second standard (104) on its adjacent one side is come on the 4th retainer (90), so that relative second wooden model of drag box (15) is accurately located;

E. drive the 5th actuating device of push rod device (130), first standard of the two is all come on the 5th retainer (134,136), so that make cope (11) the accurate location of drag box (15) relatively by promoting drag box (15) and cope (11);

F. drive push rod device (138,140) the 6th actuating device, by promoting drag box (15) and cope (11) second standard of the two is all come on the 6th retainer (142), so that between the two halves mold of the mold that lumps together, do not have interfacial dislocation.